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1、学习好资料欢迎下载1.流体 通常说能流动的物体为流体.从力学角度的特征讲,流体是一种受任何微小剪切力作用都能连续变形的的物质.2.连续介质假设可以不去考虑分子间存在的空隙,而把流体视为由无连续分布的流体微团所组成的连续介质.3.流体的压缩性用单位压强所引起的体积变化率表示,称压缩系数;4.流体的膨胀性用单位温升所有引起的体积变化率表示称体膨胀系数。5.流体的黏性是指流体为微团发相对滑移时产生切向阻力的性质。6.牛顿流体作用在流体上的切向应力与它所引起的角变形速度之间的关系符合牛顿内摩擦定律的流体，7.液体的黏度随温度的上升而减小原因：分子间距增加，分子间吸引力减小。气体的黏度随温度的上升而增大
2、原因：分子混乱运动加剧，加速了动量交换。8.流体静压强的 2 个特征：1，流体静压强的方向沿作用面的内法线方向；2 静止流体中任一点流体静压强的大小与其作用面在空间的方位无关，只是该点坐标的连续函数9.等压面:在流场中,压强相等的各点组成的面称为等压面.质量力不仅垂直于等压面,而且指向压强增大的方向.水头:单位重量流体所具有的能量也可以用液柱高来表示学习好资料欢迎下载10.帕斯卡原理：施于在重力作用下不可压缩流体表面上的压强，将以同一数值沿各方向传到流体中的所有流体质点。11.流线:在某一瞬时,此曲线上的每一点的速度矢量总是在该点与此曲线相切.12.在流场内作一本身不是流线又不相交的封闭曲线,
3、通过这样的封闭曲线上各点的流线所构成的管状表面称为流管.处处与流线相垂直的流束的截面称为该流束的有效截面。在总流的有效截面上,流体同固体边界接触部分的周长叫湿周,总流的有效截面积与湿周之比称水力半径.13.流动的力学相似 包括几何相似、运动相似和动力相似。14.两流体力学相似的条件:1 相似的流动都属于同一类的流动,它们都应为相同的微分方程组所描述;2 单值条件相似；3 由单值条件中的物理量所组成的相似准则数相等。15.弗劳德数:是惯性力与重力的比值21glvFr雷诺数:惯性力与黏性力之比vlvlRe，是判别流体流动状态的的准则数。斯特劳哈尔数：当地惯性力和迁移惯性力的比值16.基本量纲长度L
4、、质量M、时间 T 17.1沿程能量损失发生在缓变流整个流程中的能量损失，是由于流体的黏滞力造成的损失。gvdlhf222局部能量损失发生在流动状态急剧变化的急变流中的能量损文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编
5、码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q
6、7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P
7、10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2
8、U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8
9、A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9
10、N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S
11、1P7学习好资料欢迎下载失，是在管件附近的局部范围内主要由于流体微团的碰撞、流体中产生的旋涡等造成的损失。3流体在弯管中的流动损失的三部分：一部分是由切向应力产生的沿程损失，特别在在流动方向改变、流速分布变化中产生的这种损失；另一部分是形成漩涡所产生的损失；第三部分是由二次流形成的双螺旋流动所产生的损失。18.层流：流体中液体质点彼此互不混杂，质点运动轨迹呈有条不紊的线状形态的流动紊流是各流体微团间强烈地混合与掺杂、不仅有沿着主流方向的运动，而且还有垂直于主流方向的运动。19.黏性底层由于靠近管壁湍流脉动受到限制,黏滞力的作用增强,在紧贴管壁很薄的流层中湍流脉动消失,黏滞力的阻滞作用使流速急剧
12、下降,速度分布比较陡峭,速度梯度大.这一流体薄层称 黏性底层。当时 黏性底层完全淹没了管壁的粗糙凸出部分。这时黏性底层意外的湍流区域完全感受步不到管壁的粗糙度的影响，流体好像在完全光滑的管子中流动一样，这种情况管内流动叫水力光滑。20.莫迪图五个区域：层流区、临界区、光滑管区、过渡区、完全紊流粗糙管区21.水击现象：在压力管道中，由于液体流速的急剧改变，从而造成瞬时压力显著、反复、迅速变化的现象，称为水击，也称水锤。引起水击的基本原因是：当压力管道的阀门突然关闭或开启时，当水泵突然停止或启动时，因瞬时流速发生急剧变化，引起液体动量迅速文档编码:CX8Q7D8A7P10 HK2U3P1F8A5
13、ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10
14、I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7
15、文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:C
16、X8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8
17、A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10
18、HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P
19、1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7学习好资料欢迎下载改变，而使压力显著变化。预防措施（1）避免直接水击，可采取增加阀门起闭时间；（2）采用过载保护，在可能产生水击的管道上装设蓄能器、安全阀门以缓冲水击压强；（3）尽量缩短管道的长度，减低管内流速，使用弹性好的管道
20、。22.激波：使流动参数发生突跃变化的强压缩波。激波是超声速气流中经常出现的重要物理现象。来流马赫数的高低是激波强弱的重要标志。来流马赫数越高，激波越强；反之亦然。23.流体微团的运动由三部分组成：平移运动、旋转运动、含有线变形和角变形的变形运动。24.平面势流叠加速度势是满足拉普拉斯方程的调和函数，而拉普拉斯方程又是线性的，所以由几个速度势叠加成的新速度势仍然满足拉普拉斯方程的调和函数，调和函数可以叠加。25.边界层：在大雷诺数下紧靠物体表面流速从零急剧增加到与来流速度相同量级的薄层称为边界层。特点：1 与物体的特征长度相比，边界层的厚度很小；2 边界层沿流体流动方向逐渐增厚，其外边界不与流
21、线重合；3 沿壁面法线方向边界层被的速度梯度很大；4 在边界内层黏滞力与惯性力属同一数量级；5 沿壁面法线方向边界层内各点的压强相等，都等于主流在边界层外边界对应点上的压强；6 边界层内流体的流动也有层流和湍流两种流动状态。26.位移厚度：被挤入主流，使主流增加了厚度为1的一层流体，文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI
22、9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7
23、S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档
24、编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8
25、Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7
26、P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK
27、2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F
28、8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7学习好资料欢迎下载故称1为位移厚度。动量损失厚度 主流减去入流动量便是边界层内因黏性减速而减少的动量，故称为动量损失厚度。文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A
29、7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 H
30、K2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1
31、F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 Z
32、I9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I
33、7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文
34、档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7文档编码:CX8Q7D8A7P10 HK2U3P1F8A5 ZI9N10I7S1P7